Process for the preparation of granular dye formulations from polyethylene glycol melt
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United States of America Patent
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Aug 5, 1986
Grant Date -
N/A
app pub date -
Mar 11, 1985
filing date -
Mar 15, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention describes a process for the preparation of granular dye formulations by melt granulation, using a polyethylene glycol as melt vehicle. The essential feature of the invention is that a start is made from the dye which contains water, for example from the aqueous filter cake or synthesis solution, and adjusting the moisture content of the granular formulations to 1 to 30% by partial evaporation of water from the dye/polyethylene glycol melt.
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